Regular Expressions 101

Positive Lookahead(?=[A-Z][+−-]?\d+\b)

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[+−-]?

?matches at most one character from the set below:

+the literal + (43₁₀ / 53₈ / 2B₁₆)

−the literal − (8722₁₀ / 21022₈ / 2212₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a Unicode decimal digit, repeated at least once

\ba Unicode word boundary

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?=[A-Z][+−-]?\d+\b)

New

N678 à p. du 11.6.23 C+23.6.23 N−14.,24.7.23

N678 N−12.,13.12.22,18.,19.,31.1.,9.2.,7. au 10.,13. au 17.,20.,21.,22.,28.
au 31.3.,6.,13.,19.,20.4.,5.,8.5.23

Regular Expression

Extraction